Heat-controlling means for charge-forming devices



April 21, 1931. w. G. HEGINBOTTOM HEAT CONTROLLING MEANS FOR CHARGEFORMING DEVICES 2 Sheets-sheet 1 Original Filed March 14, 1923 inventorhlka/n/aarfa/w April 21, 1 3 w. e. HEG INBOTTOM HEAT CONTROLLING MEANSFOR CHARGE FORMING DEVICES 2 Sheets-Sheet 2 Original Filed March 14 1923grwentoz W Patented Apr. 21,1931

unite, STATES WALTER e. rrnerneo'rronr, or FLINT, nicnrenmnssrelvon TOMARVEL CARBURETER PATENT orricr.

COIEPANY, GF'FLINT, IVIIOHl-ZGAIT, A CORPORATION OF INDIANAHEAT-CONTROLLING IIIEANS FOR CHARGE-FORLIING DEVICES Originalapplication filed I application filed July 30,

v This invention relates to certain new and useful improvements in heatcontrolling means for charge forming devices and is a divisionalapplication of ny application filed March Li, 1923, SerialNumber62:),Q55, now Patent No. 1,750,637, the object being to provide novelmeans for controlling the application of heat to the charge formingdevice whereby the temperature of the charge can be regulated to anicety in order to produce an explosive charge of high elliciencywithout any danger of overheat1ng the charge throughout the entire rangeof operation of the engine under all atmospheric conditions.

Another object of my invention is to provide heat controlling means soconstructed tnat when used in connection with an in- .ternal combustionengine that when starting the engine I am'able to apply as large avolume of exhaust gases as desired for as long a time as desired to heatthe charge, and so arranged that when the throttle 1S .opened to anypredetermined position from closed position to full open position, themeans for controlling the 'applicatlon of heat will be operated so as tolessen the volume of the heating medium passing through v"the heatingjacket.

A still further object of the invention is to provide means for allowingthe'charge throttling valveto move any predetermined desireddistance'before thev exhaust throttling valve is moved, whereby theexhaust throttling valve will dwell on its seat while the throttlevalveis moved a predetermined distance so as to hold the volume ofexhaust gases in the heating chamber for. heating the charge quicklywhile the engine is warming up. r

A still further object of the invention is to provide an additionalvalve having a connection with the connecting rod of the-exhaust andcharge throttling valves so that the volume of exhaust, gasesdeliveredto the heat jacket will be regulated by the position of the exhaustvalve.

Other and further objects and advantages of the invention will behereinafterset forth March 14, 1923, Serial No. 625,055.

Patent No. 1,750,637. Divided and this 1925. Serial no. 47,088.

and the novel features thereof defined by.

the appended claims. In the draw1ngs,

Figure l isa side elevation of an internal proved construction of heatcontrolling means; and

Figure 4 is a detail View of the guide member and its connection to thethrottle and main exhaust valve.

In the drawing 1 indicates an internal combustion engine; 2 the exhaustmanifold, 3 the intake manifold and d a charge forming device connectedthereto which is herein shown provided with a valve controlled air inlet5 to which is connected a conduit 6 extending from an air heater 7located around the end of the exhaust manifold 2, said conduit beingprovided with an additional valve controlled air inlet 8 for regulatingthe temperature of the air delivered to the charge forming device.

' The charge forming device :l is provided exhaust manifold 2 andsecured thereto in any desired manner so that the exhaust gases from theexhaust manifold will circulate through the heat acket 9 to heat'thecharge in its passage to the internal co nbustion engine and while Ihave shown a particular construction of heat acket, it is, of course,understood that various forms of heat jackets can be employed withoutdeparting from the spirit of my invention and therefore I do not wish tolimit myself to the particular manner of applying heat to the charge inits passage to the internal combustion engine.

The inlet 10 of the heat jacket 9 is provided with a valve 12 mounted ona stem 13 provided with an arm let for operating lating valve forcontrolling the volume of gases passing into the heat chamber of theacket and is adapted to be operated in conjunction with the controllingmechanism as will be hereinafter fully described.

The end of the exhaust manifold 2 has mounted therein an exhaustthrottling valve carried by a valve stem 16 provided with an arm 17 foroperating the same, said valve being capable of completely closing theoutlet of said exhaust manifold to cause the entire volume of exhaustgases to pass through the heat jacket.

Secured to the end of the exhaust manifold is a coupling 18 from whichextends an exhaust pipe 19 to the n'mfller (not shown) in the usualmanner. The coupling 18 is provided with an inlet nipple 20 from whichextends a conduit 21 to an outlet nipple 22 formed on the heat jacket 9of the charge forming device whereby the exhaust gases will be bypassedaround the valve 15 when in closed position so as to pass through theheat jacket and heat the ex losive charge in its passage to the internalcombustion engine.

The charge forming device is pro.*ided with a throttle valve 23 carriedby a shaft 24 provided with an arm 25 to which is connected an operatingrod 26 controlled in the usual manner from the body of the vehicle towhich the device is attael'ied.

The main object of this invention to control the application of heat toa nicety so that the temperature of the charge being formed by thecharge forming device can be controlled from the seat of the vehicle towhich the device is attached in such a manner that after once being set,the application of heat is controlled by the movement of the throttlevalve of the charge forming device and to accomplish this result Iarrange on the shaft Q-l: of the throttle valve 23 a cam 27, which isloosely mounted thereon and is capable of turning on theshaft, theposition of said ram being controlled by an opera ing rod :18 which isconnected to a crank 29 provided with a lever 30 vim-king in anindicating plate 31 secured to the dash of the n or vehicle as clearlyshown in Figure 1, whereby the cam can be rotated around the throttleshaft.

In the drawing I have shown this cam mounted directly on the throttleshaft 2i, but it is. of course, understood that the cam can be mountedadjacent the throttle shaft on a suitable support and operated in thesame manner, but I have found that the manner of mounting the camsimplified by mounting it directly upon the shaft, but I do not wish tolimit myself to any particular way and position of mounting the cam.

The cam is herein shown held in its adjusted position by frictionalmeans which comprises a pin 33 secured in the wall of the heat jacketand extending through a slot 34 formed in the cam plate 27, said pincarrying a frictional washer 3;) held in frictional contact with theouter face of the cam by coil spring 36 which allows the cam to be movedby the operating means located on the dash of the motor vehicle to whichthe device is attached and be retained in its adjusted position.

This is only one form of means for adjusting and holding the cam platein its adjusted position and I do not wlsh to limit myself to the use ofthis particular construction of means as I am aware that various otherforms of means for adjusting and holding the cam plate in adjusted osition can be used without departing rom the spirit of my invention.

The cam plate is provided with a slot 37, the particular formation ofwhich can be changed, but as herein shown it is provided at one end witha substantially vertical portion and a substantially horizontal portion,which gradually terminates in a downwardly extending portion. Slidablymounted within the slot 37 of the cam plate is a member 38 provided witha rollerhaving guide flanges for holding the same in the guide wayformed by the slot and can be in the nature of an antifriction roller tofacilitate the movement of the member within the slot.

The member 38 is provided with a reduced outer end on which is pivotallymounted a hub 39 provided with a socket 40 in which is secured anoperating rod &l which has its free end pivotally and adjustablyconnected to the arm 17 of the exhaust gas throttling valve 153. Themember 38 carries a rigid arm 42 which is pivotally connected at itsfree end to a pin 414- pivotally mounted in the outer end of an arm 45fixed on one end of the throttle shaft 2i whereby the member 38 travelsvertically in the vertical portion of the slot 37 of the cam plate whenthe throttle valve shaft is oscillated so as to allow the throttle valveto move a predetermined distance before the n'iovement of the armcarried thereby causes the arm of the exhaust throttle valve 15 to move,whereby the exhaust throttle valve 15 will dwell on its seat as thethrottle valve opens until a predetermined distance has been reachedwhere the further movement of the throttle valve will cause the exhaustvalve to open or move tlmrewith, the movement of the exhaust valve inrespect to the throttle valve being determined by the shape and positionof the slot in the cam plate. lVhile I have shown a slot of peculiarformation, I amaware that the same can be changed to increase ordecrease the distance of travel of the throttle valve before the exhaustthrottlevalve is moved'and therefore I do not. wish to limit myself tothe details of construction ashereinshown as I am aware that variousforms of cam plates can be used for guiding themember connectingthethrottle valve to the exhaust throttle tocause the exhaust throttlevalve to dwell on its seat a predetermined length of time after thethrottle valve of the charge forming device has opened "a predetermineddistance.

In the construction shown and thus far described it will be seen that Ihave provided a heating means control wherein means is provided forcompletely diverting the exhaust gases out of theirnatural path oftravel through a heating chamber. to heat the charge in its passage tothe internal combustion engine controlled by the movement of thethrottle valve ofthe charge forming device in connection with adjustablemeans whereby the volume of exhaust gases del1v-' ered to the heatingmeans can be controlled to a nicety so that under different atmosphericconditions more or less heat 'canbe applied as necessary.

It will also be noted that in connection with the heating means forheating the charge produced in the charge forming device, I haveprovided an air heater which is located to the engineside of theexhaustthrottle valve and so connected to" the air inlet thatthe air will beheated before being delivered to the charge forming device,

means being provided for regulating the temperature of the, air by anatmospheric air valve.

For controlling the position ofthe volume valve I provide the operatingrod 41 employed for a connection with the throttle valve of the chargeforming device with a member 55 to which is adjustably connected a bolt56 to which is pivotally connected an operating rod-57 which extendsupwardly and is connected to the arm 14 carried by the shaft 13 of thevolume valve 12 disposed in the inlet of the heatingjacket so that it ismoved with the exhaust throttling valve and by the adjustableconnection, the rela tive positions of these two valves in respect totheir closed positions can bechanged and in practice I preferablyconnect the same in such a manner that when'the exhaust throttle valveis closed, the valve 12 is wide open or ice versa and I have found thatin; this construction positive means is provided for completely cuttingoff the application of heat to the charge forming device by the movementof the throttle as when the throttle is moved into open position and thevalve 12 is moved into closed position so as to completely close theexhaust inlet to the heating jacket of the charge forming device.

While in the drawing I have shown the volume valve arranged in the inletpassage ofthe heating jacket for heating the explosive charge, it is, ofcourse, understood that the same can be arranged in the outlet passagefor controlling the volume of exhaust gases passing through said heatingjacket asshown in my original application, Serial Number625,055, filedMarch 14, 1923, now Patent No.1,750,637, and therefore I do not wish tolimit myself to the position of this volumevalve for controlling theexhaust gases. I

IV hat I claim is 1. The combination with an internal combustion enginehaving an exhaust passage, intake passage and charge forming deviceconnected thereto, of a heater for heating the charge in its passage tothe engine, a valve for controlling the passage of exhaust gases to saidheater, a valve for controlling the passage of explosive charge to saidengine, an adjustable guide member, a movable member mounted in saidvguide member, a connection between said movable member and saidvalves, avolume valve for controlling the passage of exhaust gases throughsaidheater, and a connection be tween said volume valve and the valve forcontrolling the exhaust gases. V

2. The combination with an internal combustion eng ne having an exhaustpassage,

intake passage and charge forming device connected thereto, of a heaterfor heating the charge in its passage to the engine, a'

valvecontrolling the passage of exhaust gases. to sald heater, a valvefor controlling the passage of explosive charge to said en- 3. Thecombination with an internal combustion enginehaving an exhaust passage,

intake passage and charge forming'devioe connected thereto, of a heaterfor heating the charge in its passage to the engine, a

valve for controllingthe passage of exhaust gases through said exhaustpassage, means for conveying the exhaust gases from said passage to saidheater, a volume valve for controlling the passage of exhaust gasesthrough said heater, a throttle valve for said charge forming device, aplate provided withv a guideway disposed adjacent said charge formingdevice, a member mounted in said guideway and having a connection withthe valve for throttling the exhaust and explosive charge, a connectionbetween said exhaust throttling Valve and said volume controlling valveand means for adjusting the position of said plate to vary the effect.of movement of the throttle valve on the exhaust throttling Valve.

4. The combination with an internal combustion engine having an exhaustpassage, intake passage and charge forming device connected thereto, ofa heater for heating the charge in its passage to the internalcombustion engine, a duct for supplying exhaust gases from said exhaustpassage to said heater, a volume valve mounted in said duct, a valve insaid exhaust passage, means for supplying warm air to said char c forn1-ing device, a throttle valve for saic charge forming device, a memberconnecting said valves, means for guiding said member to vary theefi'ect of movement of the throttle valve on the exhaust valve and aconnection between the valve arranged in the duct and the valve in theexhaust passage,

5. The combination with an internal combustion engine having an exhaustpassage, an intake passage and charge forming device connected thereto,of a heater for heating the charge in its passage to the engine, saidheater being in communication with the ex haust' passage, a throttlevalve for said charge forming device, a throttle valve for said exhaustpassage, a volume valve for controlling the passage of exhaust gasesthrough said heater, an adjustable plate disposed adjacent the throttlevalve of said charge forming device, a movable member mounted in saidplate, a connection between said movable member and throttle valve ofsaid charge forming device, a rod connecting said movable member withthe exhaust throttling valve, adjustable means carried by said rod and aconnection between said adjustable means and the volume valve.

6. The combination with an internal combustion engine having an exhaustpassage, intake passage and charge forming device connected thereto, ofa heater for heating the charge in its passage to the engine, a throttlevalve for controlling the passage of exhaust gases through said exhaustpassage, means for conveying the exhaust gases from said passage to saidheater, a volume valve controlling the passage of exhaust gases throughsaid heater, a throttle valve for said charge forming device, a plateprovided with a guideway disposed adjacent said charge forming device, amember mounted in said guideway, a connection between said member andthe throttle valve of said charge forming device, a rod connecting saidmember to the exhaust throttling valve, a block carried by said rod, abolt adjustably mount- :d in said block, a rod connecting said bolt tothe volume valve and means for adjusting the position of said plate tovary the effect of movement of the throttle valve on the exhaustthrottling valve.

7. The combination with an internal combustion engine having an exhaustpassage, intake manifold and charge forming device connected thereto, ofa heater for heating the charge in its passage to the engine, a valvefor controlling the passage of exhaust gases to said heater, a volumevalve for controlling the passage of exhaust gases to said heater, avalve for controlling the passage of explosive charge to said engine, amemher having a connection with said valves, a connection between theexhaust throttling valve and said volume valve and means arranged in thepath of travel of said memher to vary the effect of movement of thecharge throttling valve on the exhaust throttling valve.

8. v The combination with an internal com bustion engine having anexhaust passage, intake passage, a charge forming device connectedthereto, of a heater for heating the charge in its passage to theinternal combustion engine, a duct for supplying exhaust gases from saidexhaust passage to said heater, a valve in said exhaust passage, a warmair stove for supplying warm air to said charge forming device, athrottle valve for said charge forming device, a volume valvecontrolling the passage of exhaust gases through said heater, a memberconnecting said volume valve to said exhaust throttling valve, aconnection between said throttle valve and exhaust valve, meanscontrolling the temperature of air delivered to said charge-formingdevice and means to vary the effect of movement of the throttle valve onthe exhaust valve.

In testimony whereof I hereunto a'liix my signature.

WVALTER G. HEGINBOTTOM.

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